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Add initial support for the multi-memory proposal (#2263)

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This commit adds initial (gated) support for the multi-memory wasm
proposal. This was actually quite easy since almost all of wasmtime
already expected multi-memory to be implemented one day. The only real
substantive change is the `memory.copy` intrinsic changes, which now
accounts for the source/destination memories possibly being different.
This commit is contained in:
Alex Crichton
2020-10-13 19:13:52 -05:00
committed by GitHub
parent c2d01fe56f
commit e659d5cecd
14 changed files with 246 additions and 107 deletions
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2
docs/stability-wasm-proposals-support.md
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@@ -21,6 +21,7 @@ vetted](./contributing-implementing-wasm-proposals.html).
| **[Reference Types]** | **Yes.**<br/>Enabled by default on x86_64. Aarch64 support in progress. | `--enable-reference-types` | [`wasm_reference_types`](https://docs.rs/wasmtime/*/wasmtime/struct.Config.html#method.wasm_reference_types) |
| **[Fixed-Width SIMD]** | **In progress.** | `--enable-simd` | [`wasm_simd`](https://docs.rs/wasmtime/*/wasmtime/struct.Config.html#method.wasm_simd) |
| **[Threads and Atomics]** | **In progress.** | `--enable-threads` | [`wasm_threads`](https://docs.rs/wasmtime/*/wasmtime/struct.Config.html#method.wasm_threads) |
| **[Multi-Memory]** | **Yes.** | `--enable-multi-memory`| [`wasm_multi_memory`](https://docs.rs/wasmtime/*/wasmtime/struct.Config.html#method.wasm_multi_memory) |
[config]: https://docs.rs/wasmtime/*/wasmtime/struct.Config.html
[Multi-Value]: https://github.com/WebAssembly/spec/blob/master/proposals/multi-value/Overview.md
@@ -32,3 +33,4 @@ vetted](./contributing-implementing-wasm-proposals.html).
[Fixed-Width SIMD]: https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md
[phases]: https://github.com/WebAssembly/meetings/blob/master/process/phases.md
[Threads and Atomics]: https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md
[Multi-Memory]: https://github.com/WebAssembly/multi-memory/blob/master/proposals/multi-memory/Overview.md